1993 E36 325i VANOS engine power modifications

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  1. 1993 E36 325i VANOS engine power modifications 
    #1
    Bimmer Fan
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    costis143's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    1993
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    manual
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    I am looking for stuff to do to my car so that I get some more power out of the engine. I know that turbo engines are much easier to add power to and short of turbo/supercharging a NA engine, getting more power is tough.

    So my car is the 325i coupe (1993). The power output quoted at the flywheel 18 years ago was 192, from what I've read around in the net, most cars only produced 160-70hp at the wheel. My question is, to what extent is that accurate?

    In addition to that I've been looking at ways to increase the power of my car.

    Till now I've been told the following:

    ECU Remap was quoted (by the tuner's shop i asked in Cyprus) to 20hp increase

    Furthermore, Ive been told to look at an exhaust manifold, however I have no idea what that will give.
    In addition, i have read that new, more efficient and lighter under drive pulleys may give more power to the wheels i.e. increase the efficiency of the system so that more power actually goes to the wheels. Is that true?

    I also thought about a CAI but i'm getting pretty mixed reactions to that, I've read people say the standard air box is as good as it gets while others recommended a conical K&N filter with heat shield (In this case I would love to know if anyone can recommend a system that is known to have worked.)

    What else can be done? It's impossible to find anything to do to the thing i mean i have friends with hatchbacks who have millions of thing to do to them and gain quite some performance.

    What i basically want is as much power as possible to the wheel, getting closer to the 200 area is what i basically want.

    Any help is welcome thanks
     
     

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    #2
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    izzy_007's Car Details
    Model of Car:
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    Year of Manufacture:
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    The basics would be full exhaust system with a filter and a descent remap which should see around 15-25hp. Not cheap considering the gains you are getting but still probably the cheapest to start off with. Otherwise tbh the cheapest way would be to put in a bigger engine and sell yours to re coupe some cost. That would probably work out cheaper than all te things I've mentioned.
     
     

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    #3
    BMW Crazed
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    kiwi328's Car Details
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    e36 328
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    cams from schrick or sunbelt or us m3 or reground etc
    Filters don't do much. Get a more free flowing panel filter and you'll be good.
    Exhaust manifolds from a euro m3 will help
    If you want more torque at the wheels change your gear ratio
    Pulleys wont give sfa. And do you really want to underdrive your waterpump

    and tune it all at the end
     
     

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    #4
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    bwchiptune's Car Details
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    Start off by getting it rolling roaded on a dyno like dyno dynamics
    Then after every mod you can retest and tell if you have made or lost power

    PERFORMANCE ECU TUNING(ALL CARS)FOR Bimmerforums MEMBERS
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    #5
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    costis143's Car Details
    Model of Car:
    325i
    Year of Manufacture:
    1993
    Transmission Type:
    manual
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    Quote Originally Posted by izzy_007 View Post
    The basics would be full exhaust system with a filter and a descent remap which should see around 15-25hp. Not cheap considering the gains you are getting but still probably the cheapest to start off with. Otherwise tbh the cheapest way would be to put in a bigger engine and sell yours to re coupe some cost. That would probably work out cheaper than all te things I've mentioned.
    You mean 15-25 total? That is a bit understated i think even for a 325, i mean sure you won't get 10hp from an air filter but given the restrictive manifolds and outdated ECU's, i would think all this would give at least 30-35hp, not more than that but not lower.




    Quote Originally Posted by kiwi328 View Post
    cams from schrick or sunbelt or us m3 or reground etc
    Filters don't do much. Get a more free flowing panel filter and you'll be good.
    Exhaust manifolds from a euro m3 will help
    If you want more torque at the wheels change your gear ratio
    Pulleys wont give sfa. And do you really want to underdrive your waterpump

    and tune it all at the end

    Can I also change an intake manifold to something better, is there anything better to put on the thing? I hear that the intake is good on the 325 is that true?

    I'm still thinking of trying a CAI with heat shield, do you know of any that have worked in the past on this car? (I don't wan't to mess up my air sensor)

    Quote Originally Posted by bwchiptune View Post
    Start off by getting it rolling roaded on a dyno like dyno dynamics
    Then after every mod you can retest and tell if you have made or lost power
    I live in Cyprus and apparently i was told that those charts are not representative of the truth to any large extent. Thus I'm a bit skeptic about trying one here in Cyprus
    Last edited by costis143; 14-04-2012 at 09:41. Reason: transcription error live instead of live
     
     

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    Do a search for 325i in the rolling road section and you will find steve's 325 which we chipped for him many years ago

    PERFORMANCE ECU TUNING(ALL CARS)FOR Bimmerforums MEMBERS
    CHIPPING AND REMAPPING
    Dyno Dynamics Rolling Road
    WORKSHOP REPAIRS(BMW,AUDI,VW,VAG,MERCS)
    TURBO,SUPERCHARGER TUNING
    ENGINE TRANSPLANT ECU CONVERSIONS
    CODING & PROGRAMMING,
    ECU REPAIRS & DPF,CAT REMOVAL
    REMAPPING TOOLS AND TUNED FILES AVAILABLE
    M5 F10 M6 F12/13 REMAPS £699
    WE HAVE NOW MOVED TO HAYES UB3 1BB
    www.bwchiptune.co.uk
    www.bwautorepairs.co.uk
    www.tuningtools.co.uk
    +44(0)7831 10 30 30
    +44(0)208 561 18 18
     
     

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